Feature: 1. 2P Rail Installation: The voltage arrester device adopts 2P rail installation, the installation is very simple 2. PC Flame Retardant Material: The shell of the voltage arrester is made of PC flame retardant material, safer to use with high quality and excellent performance 3. Visual Window: Come with visual window, traffic lights indicate power on and off at a glance 4. 40kA Maximum Discharge Current: Maximum discharge current for 40kA, nominal discharge current is 20kA, and voltage protection level is 3.5kV 5. Excellent Performance: Surge protective devices come with stable structure, excellent performance and long service life Specification: Item Type: Surge Protective Devices Product Material: PC Product Model: FXD1-PV40 Maximum Discharge Current: 40kA Nominal Discharge Current: 20kA Level: 2P Installation Method: Rail installation. Package List: 2 x Surge Protective Devices Note: Used for maintenance and installation related to electricity. Make sure that the operator has the qualification for electrician work and take necessary protective measures such as power off and insulation.